Screw driver device



Dec. 7, 1954 E. E. PARDO SCREW DRIVER DEVICE Filed March 17, 1955 United States ate SCREW DRIVER DEVICE Edward E. Pardo, Chicago, Ill. Application March 17, 1953, Serial No. 342,880, 3 Claims. (Cl. 144?!32) This invention relates to, a new and improved. screwdriver device.

The insertion and removal of screws is always. a prob.- lem. There have been many remedies proposed and practiced toenable a user to hold his screwdriver in engage. ment with a screw and at the. same time apply sufficient torque to insert or remove a screw. These remedies have usually necessitated the changing of horizontally disposed screw slots to driver engaging recesses or sockets of different shapes, and/or providing the driver handles with various shapes to permit a better hand gripping.

it is therefore a principal object of this invention to provide a screwdriver device for readily enabling a user thereof to maintain engagement with a difiicult to remove or fasten screw.

An important object of this invention is the provision of a screwdriver device which may be used in a vise for preventing longitudinal separation between screwdriver and screw. I

Another important object of this invention is to supply a screwdriver with a wrench engaging portion on. the shank thereof.

Still another important object of this invention is to provide means for holding a screwdriver device within a v1se.

Another and further important object of this invention is the provision of means for journally receiving a screwdriver device on a portable vise attachment whereby the device may have rotational, but not lateral orlongitudinal movement.

Still-a further object of this invention is to supply a removable attachment for vises having a tapered opening therethrough wherein a tool having a head of an equal and opposite taper may be journalled in said attachment for rotation by an auxiliary wrench.

Another important object of this invention is to provide a screwdriver vise combination wherein the vise holds the screwdriver against longitudinal movement.

A further object of this invention is the provision of a single attachment for vises adapted to journally receive various sizes of screwdriver devices.

Still another object of this invention is to equip a screwdriver device with a magnetized handle portion to enable it to be attracted to and held in a C clamp or vise member to prohibit undesirable lateral shifting movement during the removal of a screw or the like.

Other and further important objects and advantages will become apparent from the disclosures in the following specification and accompanying drawings.

In the drawings:

Figure 1 is a perspective view of a vise having the attachment of this invention mounted thereon.

Figure 2 is a sectional view of a portion of the device as shown in Figure l and as taken on the line 2-2 of Figure 1.

Figure 3 is a perspective view of a detail of the vise attachment.

Figure 4 is a sectional view of a detail of the screwdriver of this device.

Figure 5 is an elevational view of a modified adaptation of the device of this invention.

Figure 6 is an enlarged detail view of a portion of the spring and chain of the device as shown in Figure 1.

As shown in the drawings:

The reference numeral 10 indicates generally a work bench table or the like on which is mounted a vise 11. The vise 11 has a base part 12 which is bolted or otherangle member wise-fas n d o. h en h table .10 at 1 3. The ba e m mber 1.2. has. a fix l w. v14. and a coope a dil st ble jaw 15 mount d on a screw shaft 16. The screw sh ft 16. threadedly engages the base 12 and facilitates, movement of the jaw 15 toward and away from the stationary jaw 14. The,- serew 16 is turned by a handle 17 mounted at the outer end thereof. The vise is completed by a guide pin or member 18 which is fixed with respect to the movable jaw 15 and slidably engages a slot corresponding in size and shape. to. the pin in the base member 12,. The guide and the screware generally parallel one to the other and combine to maintain aligned relationship of the jaw 15' with the jaw 14,.

The description thus far .covers an ordinary bench vise. used generally by mechanics. The vise is used. to support the screwdriver of this invention and to main-. tain a particular relationship of parts while removing hard to remove screws. it is often difficnlt to re-. move. screws from their mountings if they have become corroded or allowed to remain for long periods of time without proper attention. Attempts to turn the screws so set by regular screwdrivers results in a.chewing up or tearing of the walls of the screw head defining the screwdriver slot. When this occurs there is nothing to. do. but drill out the screw. As stated in the objects above the present device is for the purpose of eliminating the destruction of screws in effecting their removal and also to facilitate the easy removal of all screws.

As best shown in Figure 1 an angle member 19 is arranged and constructed to rest on and move with movable vise jaw 15. Figure 19. in greater detail. The angle includes a top wall 2% and a depending front wall 21 which abuts the gripping inner face of the adjustable vise jaw 15. A hole 22 in one side of the top wall 20 is adapted to. have one end 23 of a spring 24 hooked therein. The other end 25 of the. spring has a chain. 26 connected thereto which is used for the purpose of holding the angle 19. in its proper position on the vise. The front wall 21 of the has a pin-like projection 27 extending outwardly from the end of the angle member oppositethe location of the hole 22. The pin 27 provides a receiving end for the chain 26 after it has been passed around some part of the vise such as beneath the handle 17. The chain 26 is pulled slightly to extend the spring 24 whereupon the chain is hooked over the pin 27 with that link of the chain which makes for the most secure assembly. it is thus apparent that the angle member 19 may be quickly and easily removed or attached to the vise and yet when it is attached it is securely held thereto.

The front wall of a centrally located tapered from a larger the angle member is equipped with hole 28 having its peripheral wall diameter rear opening 29 to a relatively smaller diameter front opening 30. The large opening 29 lies against the jaw 15 of the vise. This tapered opening 28 provides the means for holding the screwdriver device thereto and yet permits rotation thereof.

The screwdriver identified generally by numeral 31 has a head portion 32 with a flat top and a screw engaging end 33. The head 32 has an enlarged tapered or conical collar portion 34, the taper of which corresponds in degree to the taper of the hole 28 on the angle member. The outer end 36 of the tapered portion 34 has a greater diameter than the inner end 37 adjacent a shank part 38 of the screwdriver 31. The top of the shank part 38 is enlarged as shown at 39 to constitute a wrench engaging portion. The enlarged part 39 has a polygonally shaped outer periphery for ready and firm engagement by a wrench.

In operation the screwdriver 31 and the angle member 19 are preliminarily assembled with the tapered head of the screwdriver inserted into the tapered hole of the angle. Therefore when the angle member is thereafter chained to the vise jaw 15 the screwdriver is prevented from separate transverse movement yet it is permitted separate rotational movement. An article 40 having a difficult to remove screw 41 is placed against the fixed jaw 14 of the vise whereafter the vise handle is rotated 3 shows the angle member causing the screw 16 to move inwardly of the vise base and bring the adjustable jaw 15 toward the fixed jaw 14. When the screwdriver screw engaging end 33 enters the cross slot 42 of the screw 41 the vise is closed sufficiently to effect a starting of rotation of the screw 41. A wrench disposed transversely of the screwdriver 31 is engaged with the enlarged polygonally shaped portion.

39 to permit the screwdriver to be readily turned. The transversely disposed wrench permits the application of a considerable torque to the screw so that the mechanical advantage of the wrench over the mere rotation of the screwdriver by a small handle as on ordinary screwdrivers is enormous. The alignment of the screwdriver is maintained by the socket provided in the vise held angle member although it should be understood that the screwdriver of this invention may be and oftentimes is employed in Vises or clamps or the like without socket supplying angle means. Obviously any size screwdriver may be employed on the various screws to be removed, and the screwdrivers may be readily interchanged as desired and necessary.

A modified adaption of the device is disclosed in Figure 5 wherein a C clamp is indicated by the numeral 43 and is shown holding the screwdriver 31 of this invention. The C clamp is merely a portable vise with a stationary jaw 44 and a movable jaw 45 adjustable toward and away therefrom. A supporting structure 46 constitutes the C clamp and forms a threaded journal for a screw shaft 47 upon which is carried the movable jaw 45. As the screw shaft 47 is rotated the jaw 45 changes its spacing with respect to the fixed jaw 44. In this arrangement the enlarged head of the screwdriver abuts the movable jaw 45 and there is no mechanical means for holding the screwdriver against lateral shifting. However, it is preferable to have the enlarged head of the screwdriver magnetized so it will attract and adhere to the abutting clamp jaw 45. In this event lateral shifting or dropping of the screwdriver from the movable jaw 45 during assembly is minimized. The article 40 with the screw 41 therein is placed against the fixed jaw 44 of the C clamp whereafter the screwdriver is moved axially by rotation of the screw shaft 47 until the screwdriver engages the screw slot 42. At this point an auxiliary wrench (not shown) is placed on the polygonal shaped portion 39 of the screwdriver shank and the screwdriver turned to loosen the difficult to remove screw.

In the device of this invention the screwdriver in both modifications is held secure in a work engaging position by a vise means at which time a wrench is used to effect rotation. In the device of Figures 1 and 2 the screwdriver is held in the vise by a mechanical means permitting rotation, but preventing lateral shifting. Similar- 4 ly the screwdriver in the Figure 5 modification is held to the movable jaw by magnetic means which permits rotation of the screwdriver yet holds the screwdriver against lateral or longitudinal separation.

Numerous details of construction may be varied throughout a wide range Without departing from the principles disclosed herein and I therefore do not propose limiting the patent granted hereon otherwise than as necessitated by the appended claims.

What is claimed is:

1. A screwdriver attachment for Vises of the type having jaws movable toward and away from each other comprising an angle member having a first face positioned on top of one of said vise jaws, said angle member having an angularly disposed second face thereof arranged and constructed to lie parallel with said jaw, a screwdriver having a shank, a screw engaging portion at one end of said shank, a head portion at the other end of said shank, cooperative means on said second face of the angle member and the head portion of the screwdriver providing for rotation of the screwdriver with respect to the angle member and preventing lateral or substantial separate longitudinal relative movement, and wrench engaging means on said shank intermediate said ends.

2. A device as set forth in claim 1 in which said cooperative means includes said second face of the angle member having a tapered hole therethrough with its greatest diameter lying adjacent the vise jaw, a conical shape collar on said screwdriver head having its largest diameter adjacent the end of said screwdriver, and the diameters and angles of taper of said tapered hole and conical collar being substantially the same whereby the sbcrewdriver is journaled for rotation in said angle mem- 3. A device as set forth in claim 1 in which means is provided for removably mounting the angle member on said vise jaw, said means including a chain having one end fastened to one end of the angle member, a spring in and forming part of said chain, and hook means on the other end of said angle member to removably receive theother end of .said chain.

References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 1,377,958 Andrews May 10, 1921 2,606,470 Kinney Aug. 12, 1952 2,610,659 Shaker Sept. 16, 1952 2,626,641 Martell Jan. 27, 1953 2,651,338 Becker Sept. 8, 1953 

